import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'
import GoodsList from './components/goods/List.vue'
import Add from './components/goods/Add.vue'
import Order from './components/order/Order.vue'
import Report from './components/report/Report.vue'

Vue.use(Router)
//配置路由规则
const router= new Router({
  routes: [
    {path: '/', redirect:'/login'},
   {path: '/login',component: Login},
   {
     path: '/home',
     component: Home,
     redirect:'/welcome',
     children:[{path: '/welcome', component:Welcome},
               {path:'/users',component:Users},
               {path:'/rights',component:Rights},
               {path:'/roles',component:Roles},
               {path:'/categories',component:Cate},
               {path:'/params',component:Params},
               {path:'/goods',component:GoodsList},
               {path:'/goods/add',component:Add},
               {path:'/orders',component:Order},
               {path:'/reports',component:Report}
              ]
  }
  ]
})
//挂在路由导航守卫
//to 表示将要访问的路径
//from 代表从哪个路径跳转而来
//next 表示一个函数 表示放行
router.beforeEach((to, from, next)=>{
  if(to.path==='/login') return next();
  //获取token
  const tokenStr= window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})

export default router
